Tag testing device, tag testing method, and tag testing program

Details Tag testing device, tag testing method, and tag testing program Tag testing device, tag testing method, and tag testing program

2008-09-16

2008-09-16

Bugg, George A (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S514000, C340S572100, C340S572800, C340S584000, C340S588000, C340S589000, C340S655000, C340S010100, C324S500000, C324S512000, C235S385000, C235S492000, C374S009000, C374S010000, C374S011000, C374S120000, C374S121000, C714S025000, C714S032000

Reexamination Certificate

active

11283839

ABSTRACT:
A tag testing device uses an infrared camera to take an image of a plurality of radio frequency identification tags, compares the image with a stored standard tag pattern image storage, and detects defective tags based on the comparison. A radio wave transceiver bulk reads the tags using anti-collision, a tag response counter counts a number of tag responses, and a defective tag detector compares a number of heat emitting tags based upon the image processing with a number of tag responses counted by the tag response counter. If the number of heat emitting tags does not match a number of responsive tags, a number of the tags tested are changed by partially shielding the tags and the radio wave transceiver repeatedly bulk reads the tags using the anti-collision function while a shielding range is gradually changed, thereby narrowing down other possible defective but heat emitting tags.

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